Thinking primarily of the Apollo missions with this question, but could be expanded in an answer with a more general response, if appropriate...
With several Apollo-era astronauts sharing similar-sounding first names, such as...
- Al(fred) Worden, Al(an) Bean, Al(an) Shepard
- Ed Mitchell, Ed White
- Jack Schmitt, Jack Swigert
- James Irwin, James McDivitt, James Lovell
- Walt Cunningham, Wally Schirra
Were crews selected to avoid placing these astronauts with similar first names with one another? I would think in case of emergency or other tense situation, having unique first names would help reduce confusion as in "which one of us were they talking to when they called by first name?" I do see that the Walt/Wallys were on Apollo 7 together, but that's the only instance I can find.
Just curious is that sort of consideration was ever taken into account, or has been since then.